Numerical cosmology on the GPU with Enzo and Ramses

26th IUPAP Conference on Computational Physics

物理学;计算机科学

Gheller, C.^1 ; Wang, P.^2 ; Vazza, F.^3 ; Teyssier, R.^4

ETHZ-CSCS, Via Trevano 131, Lugano, Switzerland^1

NVIDIA, Santa Clara

95050, United States^2

Hamburger Sternwarte, Gojenbergsweg 112, Hamburg

21029, Germany^3

University of Zurich, Raemistrasse 71, Zurich

CH-8006, Switzerland^4

关键词: GPU implementation;    Numerical code;    Openacc;    Programming models;    Scientific projects;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/640/1/012058/pdf
DOI  :  10.1088/1742-6596/640/1/012058

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

A number of scientific numerical codes can currently exploit GPUs with remarkable performance. In astrophysics, Enzo and Ramses are prime examples of such applications. The two codes have been ported to GPUs adopting different strategies and programming models, Enzo adopting CUDA and Ramses using OpenACC. We describe here the different solutions used for the GPU implementation of both cases. Performance benchmarks will be presented for Ramses. The results of the usage of the more mature GPU version of Enzo, adopted for a scientific project within the CHRONOS programme, will be summarised.